291. Radiations are harmful as it:___________?
A. Causes skin cancer
B. Causes anemia
C. Alters body tissue
D. is unstable

292. The practical problem in Hydrogen production is it:______________?
A. Weight
B. Valency
C. Size
D. Chemical property

293. The number of ions produced by [Pt(NH3)]Cl2?
A. 4
B. 2
C. 3
D. 5

294. Which of the following is solid?
A. Water
B. Stone
C. Both
D. None

295. Barret esophagus is good example of__________?
A. Atrophy
B. Dysplasia
C. Metaplasia
D. Hypertrophy
E. Hyperplasia

296. Which gas is used for artificial ripening of green fruit ?
A. Carbon dioxide
B. Acetylene
C. Ethane
D. Ethylene

297. Phonon is Quantum of___________?
A. Longitudinal wave
B. Elastic wave
C. Transverse wave
D. Electromagnetic wave

298. which Compound Destroy The OZONE ?
A. CFCs
B. CH3COOH
C. BOTH A & B
D. None Of These

299. Example of ‘globular’ proteins is __________ ?
A. Peptide
B. Enzymes
C. Primary protein
D. Secondary proteins

300. When Ammonia is used as a refrigerant in vapor compression cycle?
A. Cu Tubing used
B. Steel tubes used
C. Both a & b
D. Material does not effect by refrigerant